Muab cov saib xyuas 1.8 "-31" kom tau raws li qhov xav tau sib txawv rau cov neeg siv khoom thiab cov kws tshaj lij.
Muab cov kev pabcuam kho kom haum rau kev tsim thiab tsim Smart Mobile Data Terminal kom ua tau raws li qhov xav tau ntawm cov lag luam.
